scholarly journals Experimental Research on the Cutting of Metal Materials by Electrical Discharge Machining with Contact Breaking with Metal Band as Transfer Object

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5257
Author(s):  
Aurel Mihail Țîțu ◽  
Petrică Vizureanu ◽  
Ștefan Țîțu ◽  
Andrei Victor Sandu ◽  
Alina Bianca Pop ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Scientific Paper ◽  
Business Environment ◽  
Point Of View ◽  
Metallic Materials ◽  
High Alloy ◽  
Practical Research ◽  
Alloy Steels ◽  
Metal Materials

The scientific paper presents practical research carried out by a mixed team of Romanian researchers from universities and the business environment. The research consists in applying the process of cutting metallic materials through electrical discharge machining with contact breaking using a metal band as a transfer object. The research was implemented with the help of a specially designed installation in the laboratory and subsequently all the necessary steps were taken to obtain the patent for it. Various metallic materials were cut using this process, but first of all, high alloy steels. In the global research conducted by the authors, active experimental programs and classic experimental programs were used. The composite central factorial experiment was the method that led to the most effective results in terms of interpretations and conclusions. The research as a whole includes unique elements from an engineering point of view and here we can highlight the use of a metal band as a transfer object for this type of process as well as the designed, realized, and subsequently patented installation.

Study Regarding Process of the Electrical Discharge Machining with Magnetic Activation of the Welded Joints of some Materials High Alloy Steel

2021 ◽  
Vol 890 ◽  
pp. 141-146
Author(s):  
Mihail Aurel Țîțu ◽  
Dumitru Mnerie ◽  
Diana Cristina Dragomir ◽  
Gabriela Victoria Mnerie
Keyword(s):  
Alloy Steel ◽  
Welded Joints ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Scientific Paper ◽  
Electric Discharges ◽  
Technological Parameters ◽  
High Alloy ◽  
High Alloy Steel ◽  
Magnetic Activation

The scientific paper presents an extensive research on modeling and optimizing the technological parameters of the process for processing by processing electric discharges with massive electrode with and without magnetic activation. Scientific research is based on real data collected from the process of electrical discharges performed on various samples extracted from areas of welded joints of metal components made of high alloy steel. The processing of experimental data was performed both classically and actively, especially the method of the central factorial experiment composed of orthogonal and rotary. The process parameters that were initially modeled and subsequently optimized were based on a series of independent variables characteristic of dimensional processing by copying the shape of the electrical discharge processing. Subsequent research conclusions and directions, as well as original contributions, are an experimentally validated point of view and worthy of consideration. All these fundamental ideas highlighted above find their explanations and the corresponding explicit treatment in the content of this scientific paper that addresses both managers at all levels and researchers.

Study on the Strategies for Fabrication of Die Assembly with Typical Shaped Cavity by Using Electrical Discharge Machining

2012 ◽  
Vol 192 ◽  
pp. 118-122
Author(s):  
Ren Yu Feng ◽  
Min Wang ◽  
Zhi Jian Duan
Keyword(s):  
Service Life ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Thermal Characteristics ◽  
Suitable Method ◽  
Metallic Materials ◽  
Material Hardness ◽  
The Cost ◽  
Machining Strategies ◽  
Edm Process

Die assembly is a kind of special tools for fabrication of metal or non-metallic materials parts with required design and purpose. Generally, the high material hardness for die assembly should be selected to increase the service life and reduce the cost in manufactory industry. Electrical discharge machining (EDM) is a suitable method for fabrication of die assembly as the material remove in EDM process mainly depends on the material's thermal characteristics, regardless of the hardness. In this paper, the machining strategies for fabrication of die assembly with typical shaped cavity using EDM were discussed, according to the different cavity structures, the best machining strategies were proposed

scholarly journals Study on Surface Evenness of Super-high-thickness Cutting in High-speed Wire Electrical Discharge Machining

2021 ◽  
Author(s):  
Cong Deng ◽  
Zhidong Liu ◽  
Ming Zhang ◽  
Hongwei Pan ◽  
Mingbo Qiu
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Electrical Discharge Machining ◽  
Point Of View ◽  
Working Fluid ◽  
Wire Electrical Discharge Machining ◽  
Wire Electrode ◽  
Positional Accuracy ◽  
Vibration Absorption ◽  
The Wire

Abstract Surface machined by high-speed wire electrical discharge machining (HS-WEDM) at super-high thickness (more than 1000 mm) cutting suffers from uneven surface, a major problem that has been investigated in this paper. According to the analysis, as wire frame span increases, the rigidity of the wire electrode decreases, and under the action of discharge explosive force, wire electrode vibration intensifies. As a result, the machining stability inevitably decreases. However, the core problem is whether there is enough working fluid in the slit to dampen and absorb the vibration of the wire electrode so as to ensure the positional stability of the wire electrode. To verify the above point of view: first, the wire guide and gravity take-up with bidirectional tension in the wire feeding system were installed to improve the positional accuracy of the wire electrode; second, to improve the flow of the working fluid into the slit, the slit width was increased by improving the working fluid and a medium carrier with a higher melting point and vaporization point can reduce the vaporization of the working fluid in the slit as much as possible. The experiment showed that the outlet flow of the improved working fluid is 56.72% higher than that of the original working fluid when cutting a 750 mm thick workpiece, which increases the damping and vibration absorption effect of the working fluid on the wire electrode in the long and narrow gap. After the above measures were implemented, super-high thickness cutting can be carried out continuously and steadily, the surface evenness was significantly improved, and the workpiece with a thickness of 2000 mm was cut successfully.

scholarly journals EXPERIMENTAL EVALUATION OF WEDM MACHINED SURFACE WAVINESS

2016 ◽  
Vol 56 (5) ◽  
pp. 360-366 ◽  
Author(s):  
Katerina Mouralova ◽  
Jiri Kovar ◽  
Pavel Houska
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Machining Process ◽  
Parameter Setting ◽  
Surface Waviness ◽  
Machined Surface ◽  
Spark Discharges ◽  
Typical Morphology ◽  
Metal Materials ◽  
Unconventional Machining

Wire Electrical Discharge Machining (WEDM) an unconventional machining technology which has become indispensable in many industries. The typical morphology of a surface machined using the electrical discharge technology is characterized with a large number of craters caused by electro-spark discharges produced during the machining process. The study deals with an evaluation of the machine parameter setting on the profile parameters of surface waviness on samples made of two metal materials Al 99.5 and Ti-6Al-4V. Attention was also paid to an evaluation of the surface morphology using 3D colour filtered and non-filtered images.

scholarly journals Philosophy of Economics and Management: Youth Participation in Family Business and National Economy

2019 ◽  
Vol 30 (1) ◽  
Author(s):  
Zuzana Horčičková ◽  
Nerijus Stasiulis
Keyword(s):  
Family Business ◽  
Business Environment ◽  
Point Of View ◽  
Ethical Point ◽  
State Economy ◽  
The Family ◽  
Practical Research ◽  
Economic Philosophy ◽  
People’S Attitudes

The aim of the present paper is to reconcile a philosophical reflection on the role of the family as a communitarian entity in the business environment based on the individualistic principle and practical research aimed at identifying young people’s attitudes towards their involvement in family business. Respondents of the research were students of the final years of secondary schools, tertiary professional schools and vocational schools in the Liberec Region. The family is treated from the ethical point of view as well as in terms of political and economic philosophy as a suitable environment to shape economic attitudes in young people that are not restricted to a merely ‘economist’ form of rationality and as able to play an important part in a properly working state economy. The practical research shows that a young person’s intention to work in the family business depends on whether they are involved in it already during their studies.

The Importance of Knowledge Transfer to Industry

2016 ◽  
Vol 4 (1) ◽  
pp. 1-6
Author(s):  
Emília Madudová ◽  
Keyword(s):  
Literature Review ◽  
Competitive Advantage ◽  
Divergent Thinking ◽  
Business Environment ◽  
Point Of View ◽  
Creative Industry ◽  
Specific Knowledge ◽  
Creative People ◽  
Industry Needs ◽  
Firm Owners

The paper examines the specific knowledge universities transfer to industry, reflecting to creative industry needs. As results shows, the most asked alumni competences should be tacit knowledge and divergent thinking. Divergent thinking influence the creativity. Creativity is often defined as the ability to develop new and useful ideas, but in deep literature review, we can see few irregularities and different definitions of creativity. The paper also evaluates the importance of creativity from business environment point of view and from the creative industry perspective and creative firm owners. As point of view. Another key finding is, that to educate creative people will be one of the key competitive advantage, because mainly the ability to create and disseminate knowledge is often at the heart of the organization's competitive advantage not only in creative industry, but in transport industry as well.

Tribocorrosion Properties of Titanium Alloy Modified By Electrical Discharge Machining

2017 ◽  
Author(s):  
Bruna Michelle de Freitas ◽  
Carlos augusto Henning Laurindo ◽  
Paulo Soares ◽  
Leticia Bemben
Keyword(s):  
Titanium Alloy ◽  
Electrical Discharge ◽  
Electrical Discharge Machining
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